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<?php
/**
* Copyright (c) 2011-2012, Jos de Ruijter <jos@dutnie.nl>
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
/**
* Parse instructions for the ZNC logfile format.
*
* +------------+-------------------------------------------------------+->
* | Line | Format | Notes
* +------------+-------------------------------------------------------+->
* | Normal | <NICK> MSG | Skip empty lines.
* | Action | * NICK MSG | Skip empty actions.
* | Slap | * NICK slaps MSG | Slaps may lack a (valid) target.
* | Nickchange | NICK is now known as NICK |
* | Join | *** Joins: NICK (HOST) |
* | Part | *** Parts: NICK (HOST) (MSG) | Part message may be absent, or empty due to normalization.
* | Quit | *** Quits: NICK (HOST) (MSG) | Quit message may be empty due to normalization.
* | Mode | *** NICK sets mode: +o-v NICK NICK | Only check for combinations of ops (+o) and voices (+v).
* | Topic | *** NICK changes topic to 'MSG' | Skip empty topics.
* | Kick | *** NICK was kicked by NICK (MSG) | Kick message may be empty due to normalization.
* +------------+-------------------------------------------------------+->
*
* Notes:
* - normalize_line() scrubs all lines before passing them on to parse_line().
* - Given that nicks can't contain ":" the order of the regular expressions below is irrelevant (current order aims for best performance).
* - In certain cases $matches[] won't contain index items if these optionally appear at the end of a line. We use empty() to check whether an index item is
* both set and has a value.
*/
final class parser_znc extends parser
{
/**
* Parse a line for various chat data.
*/
protected function parse_line($line)
{
/**
* "Normal" lines.
*/
if (preg_match('/^\[(?<time>\d{2}:\d{2}(:\d{2})?)\] <(?<nick>\S+)> (?<line>.+)$/', $line, $matches)) {
$this->set_normal($this->date.' '.$matches['time'], $matches['nick'], $matches['line']);
/**
* "Join" lines.
*/
} elseif (preg_match('/^\[(?<time>\d{2}:\d{2}(:\d{2})?)\] \*\*\* Joins: (?<nick>\S+) \(\S+\)$/', $line, $matches)) {
$this->set_join($this->date.' '.$matches['time'], $matches['nick']);
/**
* "Quit" lines.
*/
} elseif (preg_match('/^\[(?<time>\d{2}:\d{2}(:\d{2})?)\] \*\*\* Quits: (?<nick>\S+) \(\S+\) \(.*\)$/', $line, $matches)) {
$this->set_quit($this->date.' '.$matches['time'], $matches['nick']);
/**
* "Mode" lines.
*/
} elseif (preg_match('/^\[(?<time>\d{2}:\d{2}(:\d{2})?)\] \*\*\* (?<nick_performing>\S+) sets mode: (?<modes>[-+][ov]+([-+][ov]+)?) (?<nicks_undergoing>\S+( \S+)*)$/', $line, $matches)) {
$nicks_undergoing = explode(' ', $matches['nicks_undergoing']);
$modenum = 0;
for ($i = 0, $j = strlen($matches['modes']); $i < $j; $i++) {
$mode = substr($matches['modes'], $i, 1);
if ($mode == '-' || $mode == '+') {
$modesign = $mode;
} else {
$this->set_mode($this->date.' '.$matches['time'], $matches['nick_performing'], $nicks_undergoing[$modenum], $modesign.$mode);
$modenum++;
}
}
/**
* "Action" and "slap" lines.
*/
} elseif (preg_match('/^\[(?<time>\d{2}:\d{2}(:\d{2})?)\] \* (?<line>(?<nick_performing>\S+) ((?<slap>[sS][lL][aA][pP][sS]( (?<nick_undergoing>\S+)( .+)?)?)|(.+)))$/', $line, $matches)) {
if (!empty($matches['slap'])) {
$this->set_slap($this->date.' '.$matches['time'], $matches['nick_performing'], (!empty($matches['nick_undergoing']) ? $matches['nick_undergoing'] : null));
}
$this->set_action($this->date.' '.$matches['time'], $matches['nick_performing'], $matches['line']);
/**
* "Nickchange" lines.
*/
} elseif (preg_match('/^\[(?<time>\d{2}:\d{2}(:\d{2})?)\] \*\*\* (?<nick_performing>\S+) is now known as (?<nick_undergoing>\S+)$/', $line, $matches)) {
$this->set_nickchange($this->date.' '.$matches['time'], $matches['nick_performing'], $matches['nick_undergoing']);
/**
* "Part" lines.
*/
} elseif (preg_match('/^\[(?<time>\d{2}:\d{2}(:\d{2})?)\] \*\*\* Parts: (?<nick>\S+) \(\S+\)( \(.*\))?$/', $line, $matches)) {
$this->set_part($this->date.' '.$matches['time'], $matches['nick']);
/**
* "Topic" lines.
*/
} elseif (preg_match('/^\[(?<time>\d{2}:\d{2}(:\d{2})?)\] \*\*\* (?<nick>\S+) changes topic to \'(?<line>.+)\'$/', $line, $matches)) {
if ($matches['line'] != ' ') {
$this->set_topic($this->date.' '.$matches['time'], $matches['nick'], $matches['line']);
}
/**
* "Kick" lines.
*/
} elseif (preg_match('/^\[(?<time>\d{2}:\d{2}(:\d{2})?)\] \*\*\* (?<line>(?<nick_undergoing>\S+) was kicked by (?<nick_performing>\S+) \(.*\))$/', $line, $matches)) {
$this->set_kick($this->date.' '.$matches['time'], $matches['nick_performing'], $matches['nick_undergoing'], $matches['line']);
/**
* Skip everything else.
*/
} elseif ($line != '') {
$this->output('debug', 'parse_line(): skipping line '.$this->linenum.': \''.$line.'\'');
}
}
}
?>
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